Connecticut Dams
1,225 dams tracked by the National Inventory of Dams
Total Dams
1,225
High Hazard
236
19.3%
Poor / Unsatisfactory
126
Average Age
115 yrs
Hazard Classification
High236 (19.3%)
Significant936 (76.4%)
Low53 (4.3%)
Condition Assessment
Satisfactory474 (38.7%)
Fair254 (20.7%)
Poor / Unsatisfactory126 (10.3%)
Not Rated371 (30.3%)
Federal
9
State
169
Local
254
Private
697
Tallest Dams
- Colebrook River Dam223 ft
- Mad River Flood Control Dam178 ft
- Nepaug Dam156 ft
- Shepaug 138 ft
- Saville Dam137 ft
High Hazard Dams
- Colebrook River DamHigh
- Mad River Flood Control DamHigh
- Nepaug DamHigh
- Shepaug High
- Saville DamHigh
Poor Condition Dams
All Dams in Connecticut
Showing 676–700 of 936
| Dam Name | Height (ft) | Year | Hazard | Condition |
|---|---|---|---|---|
| Risdon Pond Dam New Haven County | 27 | 1890 | Significant | Unsatisfactory |
| Risley Reservoir Dam (No Longer Using 14605) Tolland County | 28 | 1853 | Significant | Fair |
| Riverdance Mill Dam Litchfield County | 14 | — | Significant | Satisfactory |
| Road Pond Dam Fairfield County | 8 | — | Significant | Not Rated |
| Roberts Pond Dam Fairfield County | 8 | — | Significant | Satisfactory |
| Robertsville Dam Litchfield County | 29 | 1887 | Significant | Satisfactory |
| Robin Hill Dam Litchfield County | 12 | — | Significant | Not Rated |
| Robinson Pond Dam Windham County | 14 | 1966 | Significant | Fair |
| Rock Lake Dam Fairfield County | 37 | 1875 | Significant | Satisfactory |
| Rockland Pond Dam New London County | 10 | 1900 | Significant | Satisfactory |
| Roderick Wyant Pond Dam Litchfield County | 12 | 1963 | Significant | Not Rated |
| Roger Lewis Dam Litchfield County | 15 | 1969 | Significant | Not Rated |
| Rogers Corporation Dam Windham County | 12 | 1900 | Significant | Fair |
| Rogers Lake Dam New London County | 7 | 1822 | Significant | Satisfactory |
| Rogers Pond Dam Fairfield County | 10 | — | Significant | Poor |
| Rogers Pond Dam Middlesex County | 9 | 1850 | Significant | Satisfactory |
| Romanek Pond Dam Windham County | 10 | 1969 | Significant | Fair |
| Rose Hill Ave Pond Dam Fairfield County | 19 | — | Significant | Fair |
| Rose Hill Detention Basin Dam Hartford County | 11 | 1988 | Significant | Satisfactory |
| Rose Mill Pond Dam New Haven County | 12 | — | Significant | Not Rated |
| Rosers Pond Dam Hartford County | 12 | — | Significant | Satisfactory |
| Ross Management Area Pond Dam Windham County | 4 | 1963 | Significant | Fair |
| Ross Pond Dam Windham County | 17 | 1900 | Significant | Satisfactory |
| Round Hill Pond Dam New Haven County | 12 | 1961 | Significant | Fair |
| Rowayton Pond Dam Fairfield County | 8 | — | Significant | Poor |
Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.